MessageHandler not able to catch commands

[arthur19q3]

we would like to monitor users who send commands to the bot, but when the bot is started, the messagehandler is able to catch messages and report that a private chat is started, but it seems that it can't catch any of the three pre-defined commands(which are working fine).

this is confusing.

below is the main function block.

thanks in advance.

def main() -> None:
    """Start the bot."""
    # Create the Application and pass it your bot's token.
    application = Application.builder().token("TOKEN").build()

    # Keep track of which chats the bot is in
    application.add_handler(ChatMemberHandler(track_chats, ChatMemberHandler.MY_CHAT_MEMBER))

    # Handle members joining/leaving chats.
    application.add_handler(ChatMemberHandler(greet_chat_members, ChatMemberHandler.CHAT_MEMBER))

    # Command handlers
    application.add_handler(CommandHandler("help", help_command))
    application.add_handler(CommandHandler("start", start))
    application.add_handler(CommandHandler("show_chats", show_chats))


    # Interpret any other command or text message as a start of a private chat.
    # This will record the user as being in a private chat with bot.
    application.add_handler(MessageHandler(filters.ALL, start_private_chat))



    # Run the bot until the user presses Ctrl-C
    # We pass 'allowed_updates' handle *all* updates including `chat_member` updates
    # To reset this, simply pass `allowed_updates=[]`
    application.run_polling(allowed_updates=Update.ALL_TYPES)

[arthur19q3]

according to @obaskly :
https://stackoverflow.com/questions/75955308/messagehandler-not-able-to-catch-commands/75955412?noredirect=1#comment133968458_75955412

adding group =1 in the message handler fixed the probelm.
application.add_handler(MessageHandler(Filters.all, start_private_chat), group=1)